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Contributor I
June 12, 2020
Answered

LPCM ETA for Arc?

LG has released a firmware upgrade for the B9/C9/E9 supporting multichannel PCM passthrough.  This is great except Arc doesn’t support it yet.


Because of this new update, my Apple TV decides it should use LPCM instead of Dolby Digital 5.1 with Atmos enabled resulting in only 2.0 audio for non Atmos content.  The current only workaround is to disable Atmos and enable it when you want to watch an Atmos file.  Very frustrating as the previous firmware had no issue.

 

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Ditte
DitteAnswer
November 10, 2020

Hi all,

We hear you. With a software update today, Arc now supports multi-channel LPCM, bringing new immersive sound experiences for gaming, Blu-ray discs, and more. To get support for multi-channel LPCM on Arc, download the latest Sonos S2 update from the app store and then update your system in the Sonos S2 app. After updating the app, go to Settings > System > System Updates > Check for Updates.

All the best,

Ditte

206 replies

Lyricist III
June 22, 2020

No, some people come on here to launch silly threats demanding a completely unrealistic response time for their pet feature to be implemented. 

Really a basic operation of the Sonos is NOT a pet feature it is something that should have been a basic mode of operation is a sound bart thats cost $800. Granted maybe appletv needs to also modify how they send out their signals but from what I have read they are not alone.  I have spent $3000 but a new tv with EARC and a Soundbar to find out that all my movies on ATV will not work with Sonos because they didn't include thew ability to accept LPCM format. Not good enough! 

 

jgatie
June 22, 2020

@jgatie A threat requires leverage...I don’t think my one Arc return is that much leverage against a business the size of Sonos. So relax. Now can you leave us alone to talk about this issue? Thanks.

 

 

Oh, so then it is an idle threat?  I beleive that makes my point.  

Lyricist III
June 22, 2020

@ledzep1 Unsure re: the oppo, I’m having to learn a lot of this stuff afresh because it’s been a long time since I got my Playbar and things have changed a lot since then. The issue you describe is accurate (not just netflix, it also affects other Apple TV apps, eg HBO Max) but you should note it only seems to affect people who use the Apple TV 4K as a source. I’ve heard it doesn’t affect those who stream from the LG TV’s own WebOS apps (I’ve yet to verify this myself).

Regarding whether or not Sonos will update the Arc, they’ve said that they will within another thread here. But I wouldn’t call that official confirmation and (as many people here will remind you) they’re not in the habit of providing timelines. Personally I wouldn’t consider the feature confirmed until they’ve shipped the update, so as things stand I’d advise you to make your purchasing decision assuming that the Arc will never get multi PCM support.

Lyricist III
June 22, 2020

@jgatie It makes it a description of my planned course of action. But since you seem to want your point made, consider it done. I cede to your mighty point! Now there must be another thread somewhere that’s ripe for your conquest. Surely.

Lyricist III
June 22, 2020

@ledzep1 Unsure re: the oppo, I’m having to learn a lot of this stuff afresh because it’s been a long time since I got my Playbar and things have changed a lot since then. The issue you describe is accurate (not just netflix, it also affects other Apple TV apps, eg HBO Max) but you should note it only seems to affect people who use the Apple TV 4K as a source. I’ve heard it doesn’t affect those who stream from the LG TV’s own WebOS apps (I’ve yet to verify this myself).

Regarding whether or not Sonos will update the Arc, they’ve said that they will within another thread here. But I wouldn’t call that official confirmation and (as many people here will remind you) they’re not in the habit of providing timelines. Personally I wouldn’t consider the feature confirmed until they’ve shipped the update, so as things stand I’d advise you to make your purchasing decision assuming that the Arc will never get multi PCM support.

The amazon prime and Netflix apps on my lg work fine with the arc, however their appletv app does not support atmos at this time but they state it will in a future update. So the only problem with atmos is when using the ATV to send the signal (MAT) and all of their apps only work up to 5.1 but not atmos as Sonos Arc doesn't accept LPCM 

 

jgatie
June 22, 2020

@jgatie It makes it a description of my planned course of action. But since you seem to want your point made, consider it done. I cede to your mighty point! Now there must be another thread somewhere that’s ripe for your conquest. Surely.

 

Let me explain.  You are here trying to garner support for a fix to a bug and/or a new feature (depending on which definition you employ).  You pepper your posts with idle threats and silly demands. That tells those of us who have been here a while that you aren’t here to be serious, you are only here to rant.  If you were to stop with the threats, attempt to understand the realities of a software development cycle, and make your demands more reasonable, the support you garner just may tip things in your favor amongst more posters.  The more posters on your side, the more your demands are taken seriously.  

Lyricist III
June 22, 2020

@jgatie - I liked your reply. Is that how to make you move on? Trying my best here.

jgatie
June 22, 2020

@jgatie - I liked your reply. Is that how to make you move on? Trying my best here.

 

I post what I want, where I want, and when I want.  If you think my posts are violating the TOS, feel free to alert a mod.  Otherwise, I’m afraid I’m here to stay.  

Lyricist III
June 22, 2020

@batsabode Netflix is the major one causing me issues because of the mix of 5.1 and Atmos content - most of my Apple itunes / AppleTV+ content is in 4K Atmos so I don’t need to switch audio settings to get it to work. Will try the TV’s own Netflix app this evening. Do you know if there are any other quality differences (picture, etc) between the LG webOS apps and the Apple TV 4K apps?

Ken_Griffiths
June 22, 2020

Just to mention you can switch the Apple TV audio-out (format) codec in its audio & video settings to still get full surround sound, until the multichannel LPCM codec is supported on the Arc, so it’s not entirely a lost cause. Plus the LG TV has many of the ‘popular’ Movie Apps built-in/available anyway, which will play DD+(Atmos) just fine.

I don’t see these things as being in urgent need, just more of a ‘nice to have at some point’.